面试题，如何查找一个字符串里的最长连续字符

面试题，怎么查找一个字符串里的最长连续字符？
Find   the   longest   run   in   a   string  
怎么查找一个字符串里的最长连续相同字符？
int   longestrun(char*   str)
{
        //   e.g.   input   ddbbbcxg,   return   3   (because   bbb   has   3   b 's   in   a   row)
      //   e.g.   input   hello,   return   2   (because   ll   has   2   l 's   in   a   row)
}

longestrun( "Gooooodbye "));   //   should   output   5
longestrun( "Interesting "));   //   should   output   1


[解决办法]
寒，不好意思，写的太快米认真...

int longestrun(char *str)
{
//~~~~~~~~~~~~~~~~~~~~
int i, cnt = 1, max = 0;
//~~~~~~~~~~~~~~~~~~~~

if (*str) {
max = 1;
for (i = 1; str[i]; i++) {
if (str[i] == str[i - 1]) {
cnt++;
} else {
if (cnt > max) {
max = cnt;
}

cnt = 1;
}
}
} else {
return 0;
}

if (cnt > max) {
max = cnt;
}

return max;
}
[解决办法]
程序好坏不能光看长短，效率和可读性是关键：

#include <stdio.h>

int longestrun(char* Str)
{
unsigned int uiMaxLen = 1;
unsigned int uiCurLen = 1;
if (Str)
{
char *pStr = Str + 1;
while (*pStr)
{
if (*(pStr - 1) == *pStr)
{
++uiCurLen;
}
else
{
uiMaxLen = (uiCurLen > uiMaxLen) ? uiCurLen : uiMaxLen;
uiCurLen = 1;
}
++pStr;
}
return (uiMaxLen > uiCurLen) ? uiMaxLen : uiCurLen;
}
return 0;
}
//测试程序，字符串长度不能超过1023
void main()
{
char pchStr[1024] = { '\0 '};
while (1)
{
scanf( "%s ",pchStr);
printf( "%d\n ", longestrun(pchStr));
}
}